1. Barber, Charles Victor, Melissa M. Boness., and Kenton Miller, (eds.). 2004. Securing protected areas in the face of global change: Issues and strategies. World Commission on Protected Areas, IUCN–the World Conservation Union.
2. Becker R. 1983. Nutritional quality of the fruit from the chañar tree (Geoffroea decorticans). Ecology of Food and Nutrition. 1 Apr 1983;13(2):91–7.
3. Binford, Michael W., Alan L. Kolata, Mark Brenner, John W. Janusek, Matthew T. Seddon, Mark Abbott, and Jason H. Curtis. 1997. Climate variation and the rise and fall of an Andean civilization. Quaternary Research 47 (2): 235–248.
4. Braatz SM. 1992. Conserving biological diversity: a strategy for protected areas in the Asia-Pacific region. World Bank Publications
5. Bradshaw, Corey JA., and Barry W. Brook. 2014. Human population reduction is not a quick fix for environmental problems. Proceedings of the National Academy of Sciences 111 (46): 16610–16615.